11481947663 has 2 divisors, whose sum is σ = 11481947664. Its totient is φ = 11481947662.

The previous prime is 11481947593. The next prime is 11481947681. The reversal of 11481947663 is 36674918411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11481947663 - 2²² = 11477753359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11481947693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5740973831 + 5740973832.

It is an arithmetic number, because the mean of its divisors is an integer number (5740973832).

Almost surely, 2^11481947663 is an apocalyptic number.

11481947663 is a deficient number, since it is larger than the sum of its proper divisors (1).

11481947663 is an equidigital number, since it uses as much as digits as its factorization.

11481947663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The spelling of 11481947663 in words is "eleven billion, four hundred eighty-one million, nine hundred forty-seven thousand, six hundred sixty-three".